Apparatus for pressing absorbent cotton articles, particularly tampons for feminine hygiene

ABSTRACT

An apparatus for pressing absorbent cotton articles, particularly tampons, for feminine hygiene which comprises at least one pair of first shaping means disposed in the direction of passage of the workpiece, at least one pressing means disposed in said direction of passage downstream of said first shaping means having at least one pair of pressing jaws having working faces, each of said working faces having a generally L-shaped configuration, the edge of the shorter leg adapted to abut the end of the longer leg of the other L-shaped working face to define a cavity when said jaws are in closed position.

United States Patent [191 Simon [451 Nov. 5, 1974 APPARATUS FOR PRESSINGABSORBENT COTTON ARTICLES, PARTICULARLY TAMPONS FOR FEMININE HYGIENE[75] Inventor: Stefan Simon, Modling, Austria [73] Assignee: Dr. CarlHahn GmbH, Dusseldorf,

Germany [22] Filed: Mar. 17, 1972 [21] Appl. No.1 235,770

[30] Foreign Application Priority Data Mar. 25, 1971 Germany 2114530[52] US. Cl. 19/l44.5 [51] Int. Cl A61! 15/00 [58] Field of Search19/l44.5, 149; 128/285;

[56] References Cited UNITED STATES PATENTS 2,058,275 10/1936 Voss..l9/144.5

10/1954 Greiner et al 19/144.5 5/1964 Cloots et a1 19/144.5

Primary ExaminerDorsey Newton Attorney, Agent, or FirmJas0n Lipow [5 7ABSTRACT An apparatus for pressing absorbent cotton articles,particularly tampons, for feminine hygiene which comprises at least onepair of first shaping means disposed in the direction of passage of theworkpiece, at least one pressing means disposed in said direction ofpassage downstream of said first shaping means having at least one pairof pressing jaws having working faces, each of said working faces havinga generally L- shaped configuration, the edge of the shorter leg adaptedto abut the end of the longer leg of the other L-shaped working face todefine a cavity when said jaws are in closed position.

10 Claims, 8 Drawing Figures PATENTEUNUV 5mm 3.845520 SHEET 20F 4 35b 35Fig. 3

PATENTEDHUV 5 I914 p sum 3 or 14 APPARATUS FOR PRESSING ABSORBENT COTTONARTICLES, PARTICULARLY TAMPONS FOR FEMININE HYGIENE BACKGROUND OF THEINVENTION 1. Field of the Invention The invention relates to anapparatus for pressing absorbent cotton articles, particularly tamponsfor feminine hygiene.

2. Discussion of the Prior Art Starting material for the manufacture ofsuch tampons is usually an absorbent cotton fleece delivered by acarding machine, dividedinto small, short webs and initially rolled upinto loose rools. These rolls, which are approximately as long as thecompleted tampons, are then radially compressed to a smaller diameter.

In order to increase production capacity, a parallel operation in asmany areas of the production process as possible is desirable. Knownpress constructions which, as single units, are capable of pressingtampons of a definite grade in multistage pressing operations, cannot,however, be used in parallel in a corresponding number, since this wouldresult in a spatial arrangement which would no longer be practicablewith regard to graduation and feeding of the necessary forces ormovements.

OBJECT OF THE INVENTION The object of the invention is to provide anapparatus for pressing absorbent cotton articles, which is particularlysuitable for parallel operation and in which the pressing process can beso sub-divided that the individual forces which have to be applied in are-shaping SUMMARY OF THE INVENTION Broadly, this invention contemplatesan apparatus for pressing absorbent cotton articles, particularlytampons, for feminine hygiene which. comprises at least one pair offirst shaping means disposed in the direction of passage of theworkpiece, at least one pressing means disposed in said direction ofpassage downstream of said first shaping means having at least one pairof pressing jaws having working faces, each of said working faces havinga generally L-shaped configuration, the edge of the shorter leg adaptedto abut the end of the longer leg of the other L-shaped working face todefine a cavity when said jaws are in closed position.

The present invention resolves the above problem in that, in thedirection of passage of the workpieces, there is a first shaping means,e.g., a pre-shaping tool having at least one pair of shaping jaws, and apress having at least one pair of pressing jaws serially disposed. Thejaws are such that in the closed condition thereof their workingsurfaces are flush with shaperetaining surfaces associated with thepressing jaws and are located parallel with and at a constant distancefrom each other. The jaws have mutually remote long sides located closeto the opposite shape-retaining surface of the other pressing jaw. Thereis, in each case, a projecting pressing profile which, when the pressingjaws are in the closed position, forms a hollow space corresponding tothe final cross-section of the workpiece.

The pre-shaping of the workpieces pursuant to the invention requiresonly small forces in only one axial direction. The workpiece is therebybrought to a flat shape and subsequently pressed into its final shape ina manner which makes it possible to reduce the number of movements ofthe press likewise to only one movement. In contrast, in the case of amultiple location of a known multi-stage press, the entire pressconstruction would, even for the low-power portion of the preshaping,have to be very strongly dimensioned, since in at least two axialdirections, considerable masses would have to be moved incorrespondingly heavy guides.

Where the apparatus according to the invention is concerned, however, apre-shaping stage of the very lowpower involvement is followed by apressing stage 1 in which, by virtue of the fact that parallel operationinvolves only one direction of movement, the force can be applied as thetotal of partial forces coinciding in an axial direction. This highproportion of force is easily controlled by the particular spatialarrangement of the grouped-together pressing members. It is furthermorepossible also to remain geometrically within the framework sufficientfor the feeding arrangements.

The bottom jaw of the pre-shaping tool, which in its lower openedreceiving position, is at the height of a horizontal rhythmicallymovable workpiece carrier, located on the upstream side and isconstructed as a rhythmically raisable andv lowerable lifting bar forthe workpieces. This makes it possible to economize by not having aspecial device to transfer the workpieces from the workpiece carrier tothe press.

In order to transfer the pre-shaped workpiece from the pre-shaping toolto the press, on that side of the preshaping tool which is directed awayfrom the press, there is a two-part die consisting of a pusher and anejector mandrel, and the cross section of which correspondsapproximately to that of the pre-shaped workpiece, the die being adaptedto move back and forth horizontally between the closed pair of shapingjaws, in the direction of the press. When the press is closed, due tothe shape of the mandrel and the pusher,'only the ejector mandrel ofthis two-part die is coaxially movable through the cavityformed by thepair of closed pressing jaws. In this way, the completely pressedworkpiece can be removed from the press and fed for example to apackaging machine.

The workpieces supplied by the workpiece carrier can be transferred intothe pre-shaping tool in that, on the side of the workpiece carrier whichis remote from the pre-shaping tool and the press, there are a number ofhorizontal push-rods, their number corresponding to the number ofshaping chambers in the pre-shaping tool, the push-rods being adapted tobe moved through the workpiece holders of the workpiece carrier in thecycle position thereof.

The adjacently-disposed shaping chambers of the pre-shaping tool isformed by webs secured at right angles to the lifting and shapingpresser bars and parallel with and at equal distances from one another,being guided for upwards and downwards displacement perpendicularly inthe fixed shapingbar located above.

The lower presser means is secured on a fixed, approximately horizontalbeam and the upper presser jaws on a beam adapted for reciprocatingmovement parallel with the fixed beam and cam controlled through atoggle lever assembly. This construction is simple in design and permitsof easy maintenance.

In order to permit of accurate adjustment of the press, it is desirablefor the upper presser beam to be guided on a roller guide system bymeans of finely adjustable lower rollers, the roller guide system beingraisable in a vertical plane just as the upper presser bar BRIEFDESCRIPTION OF DRAWING By way of example and diagrammatically, theinvention is illustrated in the attached drawings, in which:

FIGS. la and lb show two movement phases of the preshaping tool;

FIGS. 10 and Id show two phases of the press;

FIG. 2 is a cross section through the apparatus;

FIG. 3 is a section along the line IlI-lIl in FIG. 2;

FIG. 4 is a section along the line IV-IV in FIG. 2; and

FIG. 5 is a plan view taken from the top partially in section of aportion of the, apparatus of FIGS. 2 to 4, inclusive.

DESCRIPTION OF SPECIFIC EMBODIMENTS In FIG. la, a workpiece 1 which canconsist of a longitudinally unrolled absorbent cotton fleece, in otherwords, a roll of absorbent cotton, is located in the receiving positionon an upwardly and downwardly movable shaping jaw 2 and underneath afixed shaping jaw FIG. 1b shows the workpiece In at the end of thepreshaping stage inside a chamber 4 in the pre-shaping tool which islaterally bounded by webs 5. These webs are secured on the lower movableshaping jaw 2 and are guided for upwards and downwards displacement inapertures 6 in the upper fixed shaping tool 3.

FIG. shows the pre-shaping workpiece la after it has been transferred tothe cavity between two presser jaws 7 and 8. The two presser jaws 7, 8are provided withshape-retaining faces 9, 10 which are in parallel,spaced and opposing relationship, assuming a constant distance from eachother corresponding approximately to the height of the pre-shapedworkpiece. Projecting from the mutually remote long sides of the twopresser jaws, in the direction of the relevant opposed shaperetainingface 9 or 10 of the other presser jaw 8, are semi-cylindrical pressingprofiles 11, I2 of concave cross section which, when the two presserjaws 7, 8 are in the closed position, form a cylindrical cavitycorresponding to the circular final cross section of the workpiece lbshown in FIG. ld.

FIG. 2 shows a roll 1 which is held in a cylindrical workpiece holder 13of a, for example. endless workpiece carrier, not shown in greaterdetail. The workpiece carrier is conveyed in cadence into a transferposition, the number of workpieces which are adjacently disposed in onerow corresponding to the number of chambers 4 or pairs of pressing jaws7, 8 of the press.

The number of horizontal push-rods 14, which are flush with theworkpiece holders 13 of the workpiece carrier, in the inoperativeposition thereof, and which are smaller in diameter than the insidediameter of the workpiece holders, also corresponds to the number ofadjacently-disposed chambers 4 and pairs of pressing jaws 7, 8. That endof the push-rod which is away from the workpiece carrier is horizontallydisplaceably articulated to the upper end of a control lever 18 at 17,through an angle piece 16. The bottom end of the control lever 18 ispivotally attached at a point 20 on a console 19 disposed on the frame18. Midway along the lever is a sensing roller 21 which follows a camplate 22. The cam plate 22 is mounted on a cycle shaft 23 which isconnected through an angle drive 24 to a main shaft 25 which can bedriven by an electric motor 27 through a V-belt transmission 26. In thisway, the workpieces 1 can be transferred from the workpiece holders 13by the push-rods 14 to the shaping jaw of the preshaping tool.

The shaping jaw forms a lifting or chamber beam which is mounted on theupper side of a carriage 28 which is mounted for upwards and downwardsdisplacement in a guide 29 mounted on the frame 15. The bottom end ofthe carriage, as shown in FIG. 4, is articulated at 30 on a double lever31 which is pivotable about a horizontal axis 32 and which has an endconstructed as a follower wheel 33 which, under the action of a spring,not shown, follows a control cam 34, the control cam being mounted onthe shaft 25. In this way, the lifting or shaping beam can be moved intothe upper extreme position shown in FIG. lb, when the workpiece 1 iscompressed between the two preshaping jaw 2 and 3 to a heightcorresponding to the nominal dimension of these jaw. This pre-shapingprocess requires only minimal forces and, in this position upstream ofthe actual press, allows the number of movements of the press body to bereduced to a single movement.

Above the push-rods 14 in FIG. 2 and parallel therewith are a number oftwo-part dies 35 corresponding to the number of push-rods or press toolsand which again are guided for horizontal displacement in the frame 15,their cross section in each case corresponding approximately to thecross section of the pre-shaped workpiece la. This two-part die consistsof an ejector mandrel 35a and a pusher 35b, shown in FIG. 3, the totalcross section of which is somewhat smaller than the cavity between theopened pressing jaws 7, 8, which is filled by the pre-shaped workpiecela, as shown in FIG. 1c. The circular cross section of the ejectormandrel 35a is in turn somewhat smaller in size than the cylindricalcavity enclosed by the pressing profiles l1, 12 when the pressing jaws7, 8 are in the closed position shown in FIG. 1d. Artriculated formovement in an approximately perpendicular plane on the rear end of thetwopart dies are strips 36, the other end of which is articulatinglyconnected to the upper end of a control lever 37. The bottom end of thiscontrol lever is pivotably mounted on the bottom of the frame 15, at 38.A sensing wheel 370 on the control lever 37 follows a control cam 39,the movement of which causes the control lever 37 which is urged againstthe control cam by a spring, not shown, to move leftwards in FIG. 2, sothat the pressed-flat workpiece la between the shaping jaws 2, 3 can bedisplaced into the hollow cavity between the pressing jaws 7, 8according to FIG. la. As soon as the pressing jaws have given thepreliminary blank 1a the final form 1b shown in FIG. 1d, then from theaforedescribed, forwardly-pushed position of the two-part die, only theejector mandrel 35a can alone be pushed between the pressing profilesll, 12 to eject the completed and pressed workpiece 1b. For thispurpose, the ejector mandrel 35a is mounted on an auxiliary guide 40which is connected through an intermediate link 41 to a control lever 42having a wheel 43 which follows a control cam 44 which is likewisemounted on the cycle shaft 23. v

The workpieces l which are pushed into the lifting or shaping beam bymeans of the push-rods 14 (in FIG. 2) are compressed between the lowermovable shaping jaw 2 and the upper fixed shaping tool 3, as shown inFIG. lb.

The ejector mandrels 35a and 35b transfer the compressed workpiece fromthe four chambers of the lifting device to the pressing means. Thepushers 35b and the ejector mandrels 35 carry out strokes of equallength per unit of time during the displacement of the workpieces fromthe lifting beam to the pressing means. The length of the stroke isregulated in such a way that the pressed-fiat workpieces are placedlengthwise between the sidewalls of the frame. When the workpieces areinserted into the pressing and shaping means, the ejector mandrels 35aand 35b are retracted by approximately 3 mm. to avoid a contact of thefront side of the ejector mandrels with the pressing jaws 7 and 8 whichare mounted on the movable upper beam 46. During the further process theshaping and pressing operation is effected over the movable upper beam46 and the pressing jaws 7 and 8.

After the shaping operation is finished and after the upper beam opensby approximately l mm, the round ejector mandrels 35a are movedin-forward direction to eject the pressed-flat workpieces from thechambers of the shaping and pressing means and to transfer theminto theheating means which is placed at the rear of the shaping means.

The ejector mandrels 35a carry out a double-stroke during their workingcycle, namely in the first part they are moving in engagement with thepusher 35b for the insertion of the pressed-flat workpiece, and in thesecond part they carry out the ejection stroke for the onwardtransportation of the pressed workpiece from the shaping and pressingmeans to other tools (heating means).

When the workpieces are ejected from the shaping and pressing means, theejector mandrels 35a and the pushers 35b are retracted in the initialposition and a new movement cycle starts.

The pushers 35b are in engagement with the cross bar 102 over push-rods101 and the lever 37 is engaged to the cross bar over the link 36.

The ejector mandrels 35a are in engagement with the cross bar 40, whichis gliding to and fro on two round guides 103 which are mounted on theframe 15. The movement is initiated over two intermediate links 41 andtwo levers 42.

The pushers 35b are guided in the frame and the four push-rods 101 areguided in the cross-bar 40; i.e., during the insertion movement of thepressed-fiat workpieces into the shaping and pressing means, the crossbars 40 and 102 are simultaneously moyed forward over the correspondinglevers 42 and 37; then both movements come to a stop for the shapingoperation and after the cross bar 40 with the ejector mandrels 35a ismoved forward in the second part of the stroke.

The bottom pressing jaws are located on a fixed beam 45 mounted on theframe 15. The upper pressing jaws are mounted on the underside of a beam46 located above the fixed beam. Through a strip 47, this beam isarticulated on the short end of an angle lever 48, of which the point ofrotation on the frame is marked by reference numeral 49. A follower50 onthe long arm of the lever 48 is pressed-by means not shown against theperiphery of the control cam 51 mounted on the shaft 25. The accurateand wear-free guiding of the upper beam 46 is achieved by upper rollers52 and lower roller 53 which are finely adjustable by means of eccentricmembers. By the rotation of the shaft 25 in the direction of the arrow Xand the consequent movement of the toggle lever assembly, the inter seidentically constructed pressing jaws 7 and 8 can be displacedhorizontally, their pressing profiles moving towards each other as faras the nominal diameter. For cleaning or changing the jaws a rollerguide 54 in which the rollers 52 are mounted, can be raised about anaxis 54a provided in the frame 15. After this roller guide has beenraised, then the upper beam 46 can also be raised.

By virtue of the spatial graduation of the preshaping and pressing, themovements of the pre-shaping tool and of the pressing jaws can takeplace in a superimposed relationship which results in a saving on timein favor of the technically difficult pressing.

What is claimed is:

1. An apparatus for pressing absorbent cotton articles, particularlytampons, for feminine hygiene which comprises at least one pair of firstshaping means disposed in the direction of passage of the workpiece, inserial relationship therewith, said apparatus having a workpiececarrying means and a pair of pressing jaws, said workpiece carryingmeans locatedupstream of said pair of pressing jaws, said first shapingmeans comprising a pair of shaping jaws comprising an upper shaping jawand a lower shaping jaw, one of which is positioned over the other infacing relationship therewith, means for moving said lower shaping jawupwardly and downwardly, said apparatus further having at least onepressing means disposed in said direction of passage downstream of saidfirst shaping means having at least one pair of pressing jaws comprisingan upper presser jaw and a lower presser jaw having working faces, eachof said working faces having a generally L-shaped configuration, theedge of the shorter leg adapted to abut the end of the longer leg of theother L-shaped working face, the working face of the shorter leg of theL-shaped member having a recess therein that faces the working face ofthe opposed shorter leg having a like recess in the working face thereofto define a cavity when said jaws are in closed position, said lowershaping jaw disposed at its lower most extreme in alignment with saidworkpiece carrying means.

2. An apparatus according to claim 1 wherein a horizontally movabletwo-part die is disposed in registry with said first shaping means andsaid pressing means to transfer said workpiece from said first shapingmeans to said pressing means, said two-part die comprising an ejectormandrel and a pusher, said die having a cross section generallycorresponding to the cross section of a workpiece after it has beensubjected to said first shaping means, means for reciprocatinglydisplacing said die horizontally between the open pressing jaws of saidpressing means.

3. An apparatus according to claim 2 wherein the ejector mandrel and thepusher are so shaped that only the ejector mandrel can enter the closedjaws of said pressing means.

4. An apparatus according to claim 1 wherein a horizontal reciprocatablepush-rod is disposed in alignment with said workpiece carrying means andsaid lower shaping jaw upstream thereof, said push-rod connected to anoperating means, said operating means connected to said push-rod andadapted to advance said push-rod forward when said lower shaping jaw isdisposed at its lowermost extremity.

5. An apparatus according to claim 1 having a chamber beam, said firstshaping means comprising a plurality of shaping chambers, each of whichis defined in part by a lower shaping jaw and a fixed upper shaping jawand formed by equally spaced parallel webs located at right angles toand on said lower shaping jaw, said webs disposed within apertures insaid chamber beam disposed thereabove to guide said webs.

6. An apparatus according to claim 3 wherein there are a plurality ofpairs of pressing jaws each pair of said pressing jaws having a lowerpressing jaw and an upper pressing jaw, a generally horizontal fixedbeam and a generally reciprocatingly movable upper pressing beam, afirst means for mounting said lower pressing jaws in a generalhorizontal position, the upper pressing jaws of which are mounted onsaid reciprocatingly movable upper pressing beam generally parallel tosaid fixed beam, and a cam connected to said movable upper pressing beamthrough a series of toggle levers, a second means for movably mountingthe upper pressing jaws reciprocatingly to said first means.

7. An apparatus according to claim 6 wherein the upper pressing beam isguided by bottom rollers on a roller guide which is vertically raisable.

8. An apparatus according to claim 6 having a chamber beam havingapertures therein, said first shaping means comprising a chamber definedin part by said lower shaping jaw and formed by equally spaced parallelwebs located at right angle to and on said lower shaping jaw, said websdisposed within said apertures, said fixed shaping beam disposed aboveto guide said lower shaping jaw, said lower shaping jaw adapted to be inalignment at its lower most extremity with said workpiece carrying meanslocated on the upstream side thereof, a horizontal reciprocable push-roddisposed in alignment with said workpiece carrying means and said lowershaping jaw upstream thereof. operating means connected to said push-rodadapted to advance said push-rod forward when said lower shaping jaw isdisposed at its lowermost extremity and wherein the upper pressing beamis guided by bottom rollers on a roller guide.

9. An apparatus according to claim 8 wherein said means forreciprocatingly displacing said die is a cam connected said horizontalreciprocatable push-rod and said upper beam.

10. An apparatus according to claim 9 wherein said ejector mandrel ismounted on an auxiliary guide which is connected through an intermediatelink to a control lever responsive to the actuation of an independentcam means therefor.

22g UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,845, 520 Dated November 5, 197 4 Invent-or(s) Stefan, Simon It iscertified that error appears in the above-identified patent and thatsaid Letters Patent are hereby corrected as shown below:

In Column 1, line 68, 68, "workpiece" should. readv workpieces---.

In Column L, line M6, "Artriculated." should read Articulated In Column5, line 63, "pressing jaws" should read. pressing jaws Z Claims Claim 8,Col. 8, line 8, "fixed shaping" should read chamber Claim 8, 'Col. 8,line 12, "reciprocable" should read. reciprocatable Signed and sealedthis 3rd day of June 1975.

(SEAL) Attest: L c. MARSHALL DANN RUTH C. MASON Commissioner of PatentsAttesting Officer 7 and Trademarks

1. An apparatus for pressing absorbent cotton articles, particularly tampons, for feminine hygiene which comprises at least one pair of first shaping means disposed in the direction of passage of the workpiece, in serial relationship therewith, said apparatus having a workpiece carrying means and a pair of pressing jaws, said workpiece carrying means located upstream of said pair of pressing jaws, said first shaping means comprising a pair of shaping jaws comprising an upper shaping jaw and a lower shaping jaw, one of which is positioned over the other in facing relationship therewith, means for moving said lower shaping jaw upwardly and downwardly, said apparatus further having at least one pressing means disposed in said direction of passage downstream of said first shaping means having at least one pair of pressing jaws comprising an upper presser jaw and a lower presser jaw having working faces, each of said working faces having a generally L-shaped configuration, the edge of the shorter leg adapted to abut the end of the longer leg of the other L-shapEd working face, the working face of the shorter leg of the L-shaped member having a recess therein that faces the working face of the opposed shorter leg having a like recess in the working face thereof to define a cavity when said jaws are in closed position, said lower shaping jaw disposed at its lower most extreme in alignment with said workpiece carrying means.
 2. An apparatus according to claim 1 wherein a horizontally movable two-part die is disposed in registry with said first shaping means and said pressing means to transfer said workpiece from said first shaping means to said pressing means, said two-part die comprising an ejector mandrel and a pusher, said die having a cross section generally corresponding to the cross section of a workpiece after it has been subjected to said first shaping means, means for reciprocatingly displacing said die horizontally between the open pressing jaws of said pressing means.
 3. An apparatus according to claim 2 wherein the ejector mandrel and the pusher are so shaped that only the ejector mandrel can enter the closed jaws of said pressing means.
 4. An apparatus according to claim 1 wherein a horizontal reciprocatable push-rod is disposed in alignment with said workpiece carrying means and said lower shaping jaw upstream thereof, said push-rod connected to an operating means, said operating means connected to said push-rod and adapted to advance said push-rod forward when said lower shaping jaw is disposed at its lowermost extremity.
 5. An apparatus according to claim 1 having a chamber beam, said first shaping means comprising a plurality of shaping chambers, each of which is defined in part by a lower shaping jaw and a fixed upper shaping jaw and formed by equally spaced parallel webs located at right angles to and on said lower shaping jaw, said webs disposed within apertures in said chamber beam disposed thereabove to guide said webs.
 6. An apparatus according to claim 3 wherein there are a plurality of pairs of pressing jaws each pair of said pressing jaws having a lower pressing jaw and an upper pressing jaw, a generally horizontal fixed beam and a generally reciprocatingly movable upper pressing beam, a first means for mounting said lower pressing jaws in a general horizontal position, the upper pressing jaws of which are mounted on said reciprocatingly movable upper pressing beam generally parallel to said fixed beam, and a cam connected to said movable upper pressing beam through a series of toggle levers, a second means for movably mounting the upper pressing jaws reciprocatingly to said first means.
 7. An apparatus according to claim 6 wherein the upper pressing beam is guided by bottom rollers on a roller guide which is vertically raisable.
 8. An apparatus according to claim 6 having a chamber beam having apertures therein, said first shaping means comprising a chamber defined in part by said lower shaping jaw and formed by equally spaced parallel webs located at right angle to and on said lower shaping jaw, said webs disposed within said apertures, said fixed shaping beam disposed above to guide said lower shaping jaw, said lower shaping jaw adapted to be in alignment at its lower most extremity with said workpiece carrying means located on the upstream side thereof, a horizontal reciprocable push-rod disposed in alignment with said workpiece carrying means and said lower shaping jaw upstream thereof, operating means connected to said push-rod adapted to advance said push-rod forward when said lower shaping jaw is disposed at its lowermost extremity and wherein the upper pressing beam is guided by bottom rollers on a roller guide.
 9. An apparatus according to claim 8 wherein said means for reciprocatingly displacing said die is a cam connected said horizontal reciprocatable push-rod and said upper beam.
 10. An apparatus according to claim 9 wherein said ejector mandrel is mounted on an auxiliary guide which is connected through an intermediate link to a control lever responsive to tHe actuation of an independent cam means therefor. 